Coplay, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coplay, a borough in Lehigh County, Pennsylvania.
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. North wind 5 to 10 mph.
7-day forecast for Coplay
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Tonight | 54°F | Mostly Clear | 5 to 10 mph N | 0% |
| Saturday | 72°F | Mostly Sunny | 5 mph E | 1% |
| Saturday Night | 58°F | Rain Showers Likely | 5 mph SE | 57% |
| Sunday | 71°F | Rain Showers | 5 to 10 mph SE | 94% |
| Sunday Night | 58°F | Patchy Fog | 0 to 5 mph NW | 94% |
| Monday | 67°F | Chance Rain Showers | 5 to 10 mph NE | 33% |
| Monday Night | 53°F | Chance Rain Showers | 5 to 10 mph NE | 32% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 37% |
| Tuesday Night | 49°F | Chance Rain Showers | 10 mph NE | 35% |
| Wednesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Wednesday Night | 49°F | Chance Showers And Thunderstorms | 10 mph NE | 39% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 10 mph NE | 36% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 33% |
Forecast source: National Weather Service (api.weather.gov) for Coplay (40.671, -75.496). Updated through the day.
Growing snapshot for Coplay
Last spring frost
Apr 20
First fall frost
Oct 24
Growing season
184 days
Hardiness zone
7a
More local growing data for Coplay: nearby ZIP 18052 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Allentown Intl Ap, Pa (2.9 mi from Coplay). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.